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Birmingham Status

Birmingham Status. ASIC shear tests (250nm Panel with hybrids cured at room temp and with heated plate, sent to Berlin for shear testing. ( Complication : very variable glue thicknesses) Shear tests completed (thanks to Luise ) Phone meeting tomorrow (Friday) to discuss

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Birmingham Status

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  1. Birmingham Status • ASIC shear tests (250nm • Panel with hybrids cured at room temp and with heated plate, sent to Berlin for shear testing. • (Complication: very variable glue thicknesses) • Shear tests completed (thanks to Luise) • Phone meeting tomorrow (Friday) to discuss • 130nm: panels + placement jig • measured by Sam (see next pages) • Testing (Juergen) • Update SCTDAQ to latest version • Updated Root to 5.34 WP3_Birmingham; 30 Jan2014; John Wilson

  2. 130nm Panels • 4 panel were received, 3 of which had 8 hybrids present, 1 had only 1 • The hybrids were named B130-1/2/3/4 so that the panels and hybrid can be tracked whilst here • For the data shown, 4 point measurements were made on each pad and an average taken • The 0 height is the panel surface as measured from the “landing pads”

  3. Measuring the four (130nm) panels (Sam) WP3_Birmingham; 30 Jan2014; John Wilson

  4. All hybrids have the pads below the panel surface height, this is due to them not having the “pre-preg for lamination” that the landing pads do. (This is something Tony has mentioned)

  5. 130nm ASIC Placement Jig • The placement jig was measured at room temperature and then heated and measured again to see what variation there would be under the heat cure method. • The Jig only reached 30C rather than the 35C of the previous Jig • Again all measurements are an average of 4 points measured on the surface

  6. The first two sets of measurements were taken with the jig clamped to the CMM to prevent movement during measuring. The 3rd run was done without clamping to see if the clamping was affecting the results. The graph shows the heights of the “placement pads” of the jig. The heights are in µm. They show the height of the pads above the hybrid surface if the jig was placed on the hybrid The “Micro Jacks” appear to be expanding more than the main jig body, moving the placement pads further away from hybrid surface during heating. When heated the jig appears to bend slightly in the middle, making the middle of the jig slightly further away from the hybrid surface. Could this be due to the 2 metal types on the jig? Although there is a change when heated it appears although the results are predictable meaning the jig can be adjusted prior to ASIC placement.

  7. With all these measurements taken we can adjust the Jig so that we achieve the 80µm glue gap. • How best to adjust the jig?

  8. Next Steps 250nm Receive back shear results + tested hybrids from Berlin. Conclusions? 130nm Adjust placement jig legs to obtain glue thickness of 80μm. Try gluing + curing with heated plate: test run first to check what temperature is attained etc. WP3_Birmingham; 30 Jan2014; John Wilson

  9. Wish list LV supplies to power heated plate (4 off) : £800approx Certify nitrogen system in cleanroom for storage boxes: £1000 Weighing scales (0.1mg precision) :£2200 Upgrade to Dotmaster(modern software; lay down lines):4400 Euros WP3_Birmingham; 30 Jan2014; John Wilson

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